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l MACHINE FOR BNLARGING FINGER RINGS, l No. 413,465. Patented O Qt. 22,1889.

UNITED i STATES PATENT OFFICE.

oLAEs A. svENssoN, or BUFFALO, NEW YORK, AssIeNoa OE ONE-HALE To WILLIAMW. OLIVER, or sAIvIE PLACE.

MACHINE FoRENLARGme FINGER-RINGS.

SPECIFICATIQN forming part of Letters Patent No. 413,465, dated October22, 1889.

' Application ned August 9,1889. serial No. 320,217. (N6 moda.)

To @ZZ whom it may concer/'71,.-

Be it known that l, CLAES A. SVENSSON, a

- citizen of the United States, residing at Bufand adj usted for ringsof different sizes; and' falo, in the county of Erie and State of NewYork, have Vinvented new and useful Improvements in Machines forEnlarging Finger-Rings, of which the following is a specification.

This invention relates to a machine for en-` larging finger-rings, whichis provided with two rotating rolls, upon one of which the ring isplaced and pressed against the other roll,

so that the ring is stretched by their rotation.

The object of my invention is to produce a compact, simple, andinexpensive machine of this character, which is easily manipulated Yfragmentary sectionalelevation, on an enlarged scale, showing themechanism whereby the detachable rollers are secured tothe roller-shaft.Figs. 4.- and 5 are'cross-sections in lines 0c and y y, Fig. 1,respectively. Fig. 6 is a perspective View of the end of the rollershafton an enlarged scale. Fig. 7 is a perspect-ive view of one of therollers on an enlarged scale. y i

Like letters of reference refer to like parts in the several figures. i

A represents the frame or standard of the machine, provided with abase-plate a, whereby the machine is secured to a bench or table, and Brepresents a transverse head formed at the upper end of the standard A.

C represents the horizontal roller-shaft, journaled in the upper portionof the -head B and provided at one end with a detachable roller c and atits opposite end with a gearwheel c. The roller c is detachably securedto the shaft C by a radial bolt or pin d, arranged in a radial or.transverse recess4 CZ', formed in the shaft C. The bolt d is providedwith a beveled Or V-shaped head d2,

which projects beyond the surface of the rollerdshaft and rests againstan inclined notch cr recess cl3, formedin theiadjacent end of the rollerc, whereby the latter is held in place upon the roller-shaft andcompelled to rotate with the sama The bolt is made beveled in thelongitudinal direction of the shaft, and has parallel abrupt faces inthe direction of rotation, and the notch in the roller has a beveledfront resting against the beveled rear face of the roller and square orabrupt faces in the direction of rotation, so that the bolt operates asan automatic locking-bolt in the longitudinal direction of the shaft andand as a key or feather in the direction of rotation. By placing thedetached roller upon the end of the shaft and pressing the rollerinwardly the rear end of the roller pressing against the beveled frontside of the lockingbolt depresses the latter into its recess and enablesthe roller to be slipped upon the shaft. Upon turning the roller on thesha'ft until its notch coincides with the bolt the latter enters thenotch and locks the roller on the shaft. Upon pressing the rolleroutwardly on the shaft the inclined front side of the notch pressesagainst the inclined rear face of the bolt and depresses the latter intoits recess, when the roller can be removed from the shaft. The rollermay be provided with such a notch in both ends.

The bolt el is held outwardly by a spring d4, seated in the recess d andbearing against the innerend of the bolt. The latter is held fromturning in the opening d by means of a set-screw d5, arranged in the endof the shaft C and engaging in a slot or recess d6, formed in the sideof the bolt d. The setscrew d5 also prevents the withdrawal of the boltd from the opening d.

E represents the ring-supporting shaft arranged parallel with theroller-shaft C and below the same. This shaft is journaled eccentricallyin a cylindrical sleeve F, arranged in the head B. One end of thering-supporting shaft projects below the roller c for the reception ofthe ring to be expanded or enlarged. The opposite end of thering-supporting shaft is provided with a gear-wheel IOC roller-shaft C.rlhe sleeve F is seated in a cylindrical opening or bearing f, formed inthe head B and arranged parallel with and below the shaft C.

G represents a depending lever or arm form ed on one end of the sleeveF, and whereby the latter is turned in its bearing so as to move thering-supporting shaft E, by reason of its eccentric arrangement, towardand from the roller-shaft C. Upon turning the sleeve F in its bearingthe shaft E is moved vertically toward and from the shaft C, the axiallines of the two shafts remaining at all times parallel with each other,whereby a uniform pressure is brought to bear upon the ring, andbuckling or bending of the same is prevented.

hrepresents a hand-wheel secured to a short transverse shaft h',journaled in the lever G about midway of its length and provided at itsinner end with apinion h2. The latter engages with a segmental gear-rackI, secured to the standard A adjacent to the lever G. Upon turning thehand-wheel in one or the other direction the lever G is moved so as toincrease or reduce the pressure upon the ring. n

J represents ahand-crank secured to the end of the driving-shaft Eadjacent to the gear-wheel e, and whereby the shaft E is rotated.

The sleeve F is held against longitudinal displacement at one end bymeans of the lever -G and at its opposite end by means of a washer k,secured to the end of the sleeve F bya screw 7c and bearing against theadjacent end of the head B. This washer engages with its upper portionin an annular groove or recess k2, formed in the ring-supporting shaftD, and whereby the latter is held in the sleeve F against longitudinaldisplacement. The roller-shaft C is in turn held against longitudinaldisplacement by the gear-wheel c bearing on one side against the head Band at the opposite side against the inner side of the hub portion ofthehand-crank J. It will thus be seen that when it is desired to take themachine apart it is only necessary to remove the screw k and washer 7c,when the parts can be readily withdrawn.

The end of the head B which incloses the sleeve E adjacent to the leverG is split, as shown at Z, Fig. 2, and is provided with an adjusting-screw fm, whereby the sleeve F can be clamped against too freemovement in its seat, and whereby binding of the ring between the rollerc and the shaft E, when the latter is turned, is avoided.

N represents a vertical spindle secured centrally to the upper portionof the head B, and upon which are placed the roller c of dierentpatterns which are not in use. As shown in Fig. 1, some of the rollersare provided with concaved grooves of different width and depth tooperate upon rings of different crosssection, while others are providedwith plain flat faces for fiat band-rings, &c.; but these forms orpatterns are' immaterial, and may be changed from time to time, as maybe required.

I claim as my inventionl. The combination, with the supportingframe anda roller-shaft journaled in said frame, of a rotary bearing arranged insaid frame and a ring-supporting shaft journaled eccentrically in saidbearing, substantially as set forth.

2. The combination, with the supportingframe and a roller-shaftjournaled in said frame and provided with a detachable roller,V of arotary bearing arranged in said frame parallel with the roller-shaft anda ring-supporting shaft journaled eccentrically in said bearing,substantially as set forth.

3. The combination, with the supportingframe and a roller-shaftjournaled in said frame, of a rotary bearing arranged in said frameparallel with the roller-shaft, a ringsupporting shaft journaledeccentrically in said bearing, and an arm or lever secured to saidbearing, whereby the ring-supporting shaft is adjusted toward and fromthe rollershaft, substantially as set forth.

4. The combination, with the supportingframe and a roller-shaftjournaled in said frame, of a roller detachably secured to one end ofsaid shaft, a rotary bearing arranged in said frame parallel with theroller-shaft, a ring-supporting shaft journaled eccentrically in saidbearing and having one of its ends arranged below the roller, and an armsecured to the bearing, whereby the ring-supporting shaft is adjustedtoward and from the roller, substantially as set forth.

5. The combination, with' the stationary frame, the roller-shaft and itsroller, and the ring-supporting shaft, of the rotary bearing l' in whichthe ring-supporting shaft is eccentrically journaled, an arm secured tosaid bearing, a shaft and pinion mounted in said arm, and a gear-segmentin which said pinion meshes, and which is secured to the stationaryframe, substantially as set forth.

6. The combination, with the supportingframe and a roller-shaftjournaled in said frame, provided at one end with a detachable rollerand at its opposite end with a .gearwheel, of a rotary bearing arrangedin said frame parallel with the roller-shaft, a ringsupporting shaftjournaled eccentrically in said bearing, a gear-wheel secured to saidring-supporting shaft and meshing with the gear-wheel on theroller-shaft, and a handcrank secured to one of said shafts,substantially as set forth. Y'

7. The combination, with the supportingframe, the ring-supporting shaft,and the roller-shaft, of a detachable roller and an automaticlocking-bolt, whereby the roller is attached to its shaft, substantiallyas set forth.

8. The combination, with the roller-shaft provided with a spring-boltarranged in a radial opening formed in said shaft, of a detachableroller mounted loosely on said shaft IOO IIO

and provided with a notch, in which the head of the spring-bolt engages,substantially as set forth.

9. The combination, with the roller-shaft having a radial opening formednear one of its ends, of a spring-bolt seated in said opening and havingits head beveled in the longitudinal direction of the shaft and adetachable roller mounted onsaid shaft and provided with a notch orrecess, in which the head of the bolt engages, substantially as setforth.

l0. The combination, with the stationary frame and the rotary bearingarrangedtherein, of a shaft journaled in said bearing and 'a detachableWasher secured to the end of the bearing and projecting into a groove inthe CLAES A. SVENSSON. Witnesses:

F. C. GEYER, ALICE G. CONNELLY.

